Theoretical and Applied Climatology

, Volume 129, Issue 1–2, pp 111–127 | Cite as

Trend of monthly temperature and daily extreme temperature during 1951–2012 in New Zealand

  • Tommaso CaloieroEmail author
Original Paper


Among several variables affecting climate change and climate variability, temperature plays a crucial role in the process because its variations in monthly and extreme values can impact on the global hydrologic cycle and energy balance through thermal forcing. In this study, an analysis of temperature data has been performed over 22 series observed in New Zealand. In particular, to detect possible trends in the time series, the Mann-Kendall non-parametric test was first applied at monthly scale and then to several indices of extreme daily temperatures computed since 1951. The results showed a positive trend in both the maximum and the minimum temperatures, in particular, in the autumn-winter period. This increase has been evaluated faster in maximum temperature than in minimum one. The trend analysis of the temperature indices suggests that there has been an increase in the frequency and intensity of hot extremes, while most of the cold extremes showed a downward tendency.


Positive Trend Negative Trend Diurnal Temperature Range Extreme Index Significant Downward Trend 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The author would like to thank the National Institute of Water and Atmosphere Research for providing access to the New Zealand meteorological data from the National Climate Database.


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  1. 1.National Research Council (CNR), Institute for Agricultural and Forest Systems in the Mediterranean (ISAFOM)RendeItaly

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